Improvement in links for steam-engines



UNITED STATES PATENT OFFICE.

FRANCIS A. BROWN, 0F ITHIOA, NEW. YORK.

IMPROVEMENT IN LINKS FOR STEAM-ENGINES.

Specification forming part of Letters Patent N0. 41,159, dated September 13,1864. 4

To all whom it may concern,.-

Be it known that I, FRANCIS A. BROWN, of

1thica,in the county ot' Tompkins and State of New York, have invented a new and Improved Link for Steam-Engines; and I do hereby declare thatl the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a side view of my invention Fig. 2, a transvirse section ot the same, taken in the line x m, Fig. l.

Similar letters ot' reference indicate like p tri s.

This invention relates to a new and improved link for operating the slide-valves ot' steam-engines and for reversing the former and regulating the admission of' steam to the cylinder.

The inventim consists in using a solid link instead of the slotted one in common use, and having the block to which the valve-rod is attached fitted on the link by means of clamps, all being arranged in such a manner as to admit cf the link being constructed at a less cost than the ordinary ones in use, and capable of being kept in repair and proper working order with greater facility.

A represents the link, or rat-her the substitute for the ordinary slotted link. This link A is simply a curved bar, of rectangular form in its transverse section, and provided at each end with an eye, a, to which the eccentric rods are connected, which operate the link. At the center of one side of the link A there is a pin, b, to which the link-adjusting mechanism is connected.

B is a block to which the rod C of the said valve is connected.l This block is composed of a metal plate, c, which bears against the side of the link A, opposite to that from which the pin b projects, and two lugs, d d, are attached to the plate c, one at each end, by screws e, which pass through oblong slots fin the lugs. These lugs bear against the front and back edges of the link A, and on the screws e plates g are fitted and secured by nuts h on the screws, said plates lapping ovrr the side of the link from which the pin b projects. The oblong slots f admit of the lugs d d being adjusted to compensate for wear, so that the link may always t snugly to or in the block B.

The operation of the link, eccentric rods, and valve-rod being the saine as usual, and well known to all engineers and machinists, no particular description in that particular is necessary.

I claim as new and desire to secure by Letters Patent- A solid bar-link, A, provided with a valve# rod block, B, composed of plates c g g and ad instable lugs l d, connected by screw-bolts e, all arranged as and for the purpose specitied.

FRANCIS A. BROWN.

Vitnesses GRIFFIN PUL'IZ, JAoon M. KIMBALL. 

